Turn ASS subtitles into SMI. It is converted in your browser, so the file never leaves your device.
Drop ASS files here
or choose from your computer paste with Ctrl V
from Photos or Files
Ready · other file types work too0 bytes uploaded, ever
Drop ASS (SSA, SubStation Alpha) files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.
Press Convert. There is nothing else to set. The work happens in this tab.
Save the SMI, or download everything as one ZIP if you converted several files.
The ASS to SMI converter is part of this page and runs inside your browser. Your subtitles are never sent to ToAny or to anyone else.
Nothing has to travel to a server and back, so the conversion starts the moment you press Convert, even on a slow connection.
No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.
ASS styling is not understood by simple players, and it is lost when converting to plain formats. SMI can carry several languages in one file for the players that read it. ASS is at home in anime and karaoke subtitles with fonts, colours and positioning; SMI is the usual choice for subtitles for Korean-market players and multilingual files.
The text is read as UTF-8 or UTF-16, whichever the file is. An older file in another code page is read using the charset it declares, or as Windows-1252 if it declares none, so accented letters in an unlabelled legacy file can come out wrong. A file that is not text, such as the picture-based subtitles of a DVD, is refused instead of being converted to nonsense. Of the styling, only italic, bold, underline and the position on screen (top, middle or bottom, left, centre or right) travel between formats; fonts, colours, outlines and effects do not. Each line takes its italic, bold, underline and alignment from its style and from override tags; drawing commands and karaoke effects are ignored. The file is written with one language class, and cues that overlap in time are shown together, as SAMI has a single timeline.
ASS adds styles to subtitles: fonts, colours, outlines, shadows, exact screen positions and animation effects. Fan-subbed anime and karaoke use it heavily. SSA is the earlier version, and the .ssa extension is read as the same format.
Opens in VLC, mpv, Aegisub and most fan-subtitling and media-server software; not browsers
ASS converterSAMI is an HTML-like subtitle format from Microsoft, with each cue a SYNC tag holding the start time in milliseconds. It can hold several languages in one file, selected by style class. It is most common in South Korea.
Opens in Windows Media Player, KMPlayer, PotPlayer, VLC and Korean-market players
SMI converter| ASSASS/SSA subtitles | SMISAMI subtitles | |
|---|---|---|
| Stands for | Advanced SubStation Alpha | Synchronized Accessible Media Interchange |
| Type | Styled subtitles | Subtitles |
| Compression | None | None |
| Introduced | The 2000s, by the SubStation Alpha program and the Aegisub community | The late 1990s, by Microsoft |
| Opens in | VLC, mpv, Aegisub and most fan-subtitling and media-server software; not browsers | Windows Media Player, KMPlayer, PotPlayer, VLC and Korean-market players |
| Best for | Anime and karaoke subtitles with fonts, colours and positioning | Subtitles for Korean-market players and multilingual files |
| File extension | .ass, .ssa | .smi, .sami |
No. The ASS to SMI conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.
No further quality is lost: SMI stores the decoded audio exactly. The result is identical in content.
Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.
The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the ASS file, press Convert and save the SMI. There is nothing to install.
Yes, but a subtitle file is small. Files up to 50 MB are accepted, far more than any real subtitle file. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.